Water-heater



G. F. SCHWARTZ WATER HEATER.

Patented Dec. J, 191%).

APPLICATION FILED SEPT-4.1918.

v ATTORNEY nurrnn sma ts .rarnnr onrrcn.

GERI-IAR-D'T F. SCHWARTZ, ST. LOUIS, MTSSOURI.

To all whom it may concern:

Be it known that I, GERHARDT F. SCHWARTZ, a citizen of the United States, and a resident of St. Louis, Missouri,have' invented certain new and useful Improvements in Water-Heaters, of which the following is a specification. V

My present invention has for its object to 'improve water heaters for the purpose of pan forming part of this apparatus;

Fig. 4: a vertical section on line 44 of F ig. 3; and

Fig. 5 a top plan view of the second com; bustion burner and its water jacket substantially on line 5-5 of Fig. 1.

lVater froma suitable source of supply is admitted through the pipe extending downwardly through. a bushing 11, fitted into the top or cover 12 of the tank proper, havinga cylindrical metallic wall 13 preferably surrounded by a jacket 14 of asbestos or other suitable heat retaining material;

' thatjs to say, a poor conductor ofiheat.

Into the lower end of the pipe 10*entends the upper end of a thermostatic tube 15 of copper containing a porcelain rod, said tube passing through a bushing 16 in the annular bottom 17 of the tank, and having its lower end" connected with a thermostat 18, the

. detail construction of which forms the subject-matter of another application. It will suffice to say here that the fuel gas enters the thermostat at 19, and that this thermostat contains a valve controlling the passage of said gas to the pipes 20 and 21, the latter having a pilot light, while the former eX tends into the air tube or mixing tube 22,

open to the surrounding air at the bottom,

and leadingto a double combustion burner of acharacter set forth 1n other appllcations for patents previously filed by me, for in-.

stance, Serial No. 58,927, filed October 30th,

WATER-HEATER.

Specification of Letters Patent.

Patented Dec. 9, 1919.

Application filed September 4, 1918. Serial No. 252,507.

1915. The said burner is composed of a primary burner 23, having annular or slit like substantially horizontal outlets, by which the flame is directed against a surrounding vertical wall 24, and above said primary burner is located the secondary burner plate provided with openings 26, and extended at its periphery to form the top wall of a water acket 27 surrounding said wall 24. The jacket is provided with a partition 28, and at one side of said partition a pipe 29 comnnmicating with the water jacket 27 extends upwardly to connect with a union 29 and with a vertical pipe 29 reaching from the bottom 17 of the tank to a point near the top of saidtank, through which also extends a pipe 30 for conducting the hot water to the place of use, said pipe 30 being preferably in line with'the pipe 29".

Connections may be made to a water back of well-known construction by means of a tube or nipple 31 located about half way between the top and bottom of the tank, and another nipple 32 located near the bottom of the tank. The nipple 32 has two connections, one of them indicated at 33 leads to the jacket 27; the other, indicated at 34' (and preferably made in two portions connected by a union 3%) leads to a nipple 35 at the lower portion of the tank. The burner with its jacket is substantially ofthe same construction as in Figs. 4 and 5 of my application Serial No. 58,927 above referred to, but instead of harin the connections 29, 33 extending upwardly at opposite sides of i the partition 28, one of the said connections,

to wit, the pipe 3 3. is arranged horizontally and enters the vertical wall of the acket 27 Into the central opening of the tank bottom 17 is fitted a flue 36 )referably corru gated as shown. and this uc together with the adjacent edge of the tank bottom is fitted into an annular rhannel 37 of a condensation pan. which in addition to said annular channel co'ul n'ises a central pan or dish 38 spaced from said channel so as to provide an annular opening 39, the two parts of the pan being suitabl connected as by lugs 40. Into the central portion 38 of the coruileusatiou pan is lifted another flue -11 preferably also corrugated, said flue being of considcrably smaller diameter than the flue 36, So that an annular heating chamber 42 will be formed between them. The condensation pan closes the bottom of the central flue 4-1, which latter extends upwardly through the top 12 of the tank and is open for the discharge of the combustion products.

third of its height only, and is provided with a top plate. 43 to close the heating chamber 42. Immediately below the said is provided with a base 47 surrounding the burner, and said base is preferably provided with two doors, one of them indicated at 4:8 to facilitate'access to the burner, and the other 49 provided with a notch at one of its edges or corners for the passage of the pipe 33. v

It will be understood that the combustion at the primary burner will heat the water in the jacket 27, which water is supplied through the pipe 33. The water thus heated passes from the jacket 27 into the heater tank,-through the pipe 29. The water supplied to the acket 27 through the pipe 33 comes partly from --the water back, and partly from the lower portion of the tank through themipple 35, or all from the lower portion of the tank if no waterback connections are made.

The secondary combustion takes place above the burner plate 25, and the combustion products are projected against the bottom 17 of the tank, and against the condensation pan, and are compelled to pass through the annular channel 39 between the central portion 38'and the annular channel 37 of the condensation pan. The combustion gases thus reach the heating chamber 42, the outer wall 36 of which forms a large surface in contact with the water at the lower portion of the tank, that is to. say, "in contact with the coldest part of the'waterz- The combustion gases rise in the chamber 42 along the said wall 36, and pass through the opening 44 into the central flIue a1. In the upper portion of the flue 41, which upper portion is incontact with the water contained in the tank, the combustion gases are retarded by the spiral baffle 45, so as to cause them to give up most of their remaining heat to the water contained in the tank. Any matter condensed from the combustion g: ses within the chamber 42 will flow down partly along the inner surface of the flue 36, into the annular chamber 37 of the condensation pan and partly'along the outer surface of the flueel into the central portion 38 of said pan. Any matter condensed The flue 36 does not extend to 3 the top of the tank, but say to about oneneat-pm within-the flue 41 will flowalong the inner tion 38 of the condensation pan. v The condensation pan may be held against surface of said flue into the central per .the lower edgesof the flues36, 41 by a post or leg 50 interposed loosely between the second combustion burner top '25 and said pan, so that the pan can be removed readily for cleaning and also to. give access to the flues when desired.

The burner or water-heating member located beneath the tank, can be detached J readily for cleaning or other-purposes, by

the lower portion of'the first-named flue, the

annular space between the two flues being out of communlcation wlth the water space inner flue at a point slightly below the top of the outer flue, and means for supplying a the bottom thereof.

2. A water heater comprising a tank, a flue extending within said tank from.

of the tank, but communicating with the heating mediumto said annular space attop to bottom, another flue arranged within the tank and surrounding the lower portion of the first-named flue, the annular space between the two flues being out of communi-S cation with the water space of the tank, but

communicating with the inner flue at a point slightly below the top of the outer flue, and? a condensation pan fitted to the lower edges of said flues and provided between-them with an opening forthe admission of a heat- 111g medium to said annular space.

3. A water heater compr1s1ng awater tank, a flue extending within said tank from top to bottom, another flue arranged within the tank and surrounding the lower portion of the first-named flue, the annular space between the two flues being out of communication with the water space of the tank, but

communicating with the inner flue ata point slightly below the top of the outer fine, a central dish into which extends the lower edge of the inner flue, an annular channel spaced from said dish and receiving the lower edge of the outer flue, and means'for introducing a heating agent into the space between the said dish and said channel.

a. A water heater comprising a water tank, a flue extending uprightly through said tank, a condensation pan at the lower end of said flue, a burner disposed directly ranged within the tank and surrounding the lower portion of the first-named flue, said outer flue being'eorrugated, the space between the two flues being out of communicatank,.a-flue extending within the tank atthe tion with the water space of the tank, but communicating with the inner flue, and Ineans for first through said space between the flues and then through the inner flue.

6. A water heater tank, .a one-way flue extending-within said tank from top to bottom, a condensation pan at the lower end of said flue, another flue. arranged withinthe tank and surrounding the lower portionof the first named flue, th'eannular space between the two flues being out of communication with the water space of the tank, but communicating with the inner flue at a point slightly below the top of the outer flue, and means for causing a heating medium to pass through said space. and through the innerflue. p

7. A water heater comprising a water tank, a-one-way flue extending within said tank from top portion of the first-named flue, the anof communication with the water space of the tank, but communicating with the inner flue at a point slightly below the top of the outer flue, a condensation pan at the bottom of both flues, and means for causing a heating medium to pass through said annular space and through the inner flue.

8. A Water heater comprising a water lower portion thereof, a one-way flue of smaller widths extending from the top of the tank into the first-named flue, the space between the two flues being out of communication with the water space of the tank, but communicating with said one-way flue, and means for causing a heating'mediu'm to pass through the space between the fines and through said one-way flue.

9. A 'water heater comprising a water tank, a flue extendin lower portion thereo a flue of smaller Width extending from the top of the tank into the the space between the two first-named flue, flues being out of communication with the water space of the tank, but communicating with the inner flue, a condensation pan-at the lower ends of both flues', and means for causcausing a heating, medium to pass comprising a water to bottom, another flue ar ranged within the tank and surrounding the lower nular space between the two fines being out said flue being subjectprimarily -means extending from said within the tank at the 1 pipe adjacent said lateral inlet pipe and ex tending to the upper part of said tank.

11. A water heater comprising a water tank, a fine extending uprightly through said tank, means for supplying water to said tank. heating means below said flue, an annular water channel surrounding said heatingmeans laterally, a water inlet pipe extending to said channel and connected to the lower part of the tank, and an outlet pipe extending from said channel upwardly through said tank exteriorly of said flue and having its outlet end disposedin the upper part of said tank.

12. A water heater comprising a water tank, a flue extending uprightly through said tank, means for supplying water to said tank, heating means below said flue, an annular water channel surrounding said heating means laterally, a lateral inlet pipe extend ng to said channel, and connected to the lower part of the tank, and a vertical outlet pipe extending from said channel upwardly through said tank and having its outlet end disposed in the upper part of said tank.

13. A water heater comprising a water tank, aflu'e extending uprightly through said tank, heating means belo' Y said flue,

to the rising heat from said heating means, a water channel surrounding said heating means laterally and being subject primarily to the lateral heat from said heating means, water inlet means for said channel, a water outlet channel upres wardly through said tank exteriorly of said flue and having its outlet end disposed in the upper part of said tank. a 14. A water heater comprising a water 'tank, a flue extending uprightly through said tank, a cold water inlet pipe extending downwardly through said tank and having its outlet end disposed in the lower part of said tank, a water channel surrounding said heating means and subj set to heat therefrom, water inlet means for said channel, and

warm water outlet means extending from said channel upwardly through said tank exteriorly of said flueand having its outlet end disposed in the upper'part of said tank. 15. A water heater comprising a )vater tank, a flue extending uprightly through sai tank,

heating means disposed below sai 1130 lip) fine and comprising a plllntlly burner, a top plate over said burner. in close proximity thereto provided with openings for secondary combustion surrounding said burner at a level above the burner top, said plate ini niediately above the burner being uiiperforated, a downwardly extending flange on said top plate entirely inrlosing said primary burner laterally, and an annular water jacket surrounding said flange laterally, water inlet means for said water acket, and water outlet ineans extending from said channel upwardlythrough said tank elitei'iorly of said flue and having its outlet end disposed in the upper part of said tank.

INA water heater comprising a water tank, a one-way tlue extending within said tank from top to bottompa condei'isatioii pan at the lower end of said flue, another fine arran ed within the tank and surround ing the lower portion of the first named flue,

the annular space between the two fines being out of communication with the water space of the tank, but communicating with the inner flue at a point slightly below the top of the outer tlue, ineans for supplying a heating niediu nto said annular space atthe bottoin thereof and a spiral baflle disposed in said innerflue and having its lower end adjacent the point of communication be tween said annular space and said inner fine.

17. A wa tenheater comprising a water "tank; a one-way fine extending within said tankii roin topto bottom, a condensation pan at the lower end of said tine, another flue arran ed within the tank and surrounding the lower portion'ot the first named fine, the

annular space between the two tlues being out of: com iunication.with th water space "burner.

tank, a heating flue extending through said tank, a burner located below said tank, a condensation )an engagingthe lower end of said flue, and a" removable support interposed between said pan and the top of the 19. A Water heater comprising a Water tank, a heating flue extending-throughsaid tank, a burner located below said' tank, a condensation pan engaging the lower end of said tlue,-and a removable support interposed between said pan and the top of theburner.

Q0. A' water heater comprising a tank, a

flue extending through said tank, a reinovable condensation pan engaging the lower end of said fine, a 'ater heating member l'o- Gated beneath said tank, a removable support interposed between said pan-and said member and two unions for connecting said member with the tank to enable the said n einber to be detached upon unscrewing said unions.

lii t-estiiiioii that I claim the foregoing as my invention, l have signed my name in presence of two subscribing witnesses.

tLtERHARDl F SCHWARTZ. Vt itnessesz- Dianna N. IdANLEY, L. J. SHARP. 

